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प्रश्न
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उत्तर
Precautions while using electricity:
(i) One must use wires or cables of current carrying capacity higher than the current which can flow through the circuit while using all appliances.
(ii) An electrical appliance must never be operated (or touched) with wet hands.
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संबंधित प्रश्न
What does an electric circuit mean?
How many milliamperes as there in 1 ampere?
In the circuit diagram given below, three resistors R1, R2, and R3 of 5 Ω, 10 Ω and 30 Ω, respectively are connected as shown
Calculate:
- current through each resistor.
- total current in the circuit.
- total resistance in the circuit.
The rating of a fuse connected in the lighting circuit is:
(a) 15 A (b) 5 A (c) 10 A (d) Zero
Complete the following sentence:
A fuse is a short piece of wire of high ......... and low
An electric iron is rated 750 W, 230 V. Calculate the electrical energy consumed by the press in 16 hours.
Three heaters each rated 250 W, 100 V are connected in parallel to a 100 V supply. Calculate :
The total current taken from the supply
In current electricity, a positive charge refers to ______.
